![]() ![]() Some hashing algo's are slow like what Bitwarden uses. Storing the hash is preferred because it's not your real password. When you log into a service they hash your password and compare it to the hash they have. So hashing is only used for authentication. Your vault data is not stored as a hash because you would not be able to reverse it. The only way to figure this number out is to guess every combination. This makes a hash non-reversible because the information has been removed. So the hashing algo will take 5635678 and destroy some information like remove the last 2 numbers so you end up with 56356. So far it's like encryption but what makes hashing different is that information is destroyed. Think of it like the math problem before, where we have two numbers and output.įor example, if we take these two numbers we get. Hashing is like encryption but it only goes one way. The actual encryption process is also more complex than this too but this gives you a good explainer. The encrypted data we're dealing with is an even larger number. You'll have to manually check every number and that will take longer than the age of our sun. That's easy, 1 * 4 and 2 * 2 both give you the answer 4. What makes this secure is that we deal with very large numbers.įor example, what two numbers when multiplied together give you 4? When multiplied the output ( Z) is your encrypted data. Your master password is transformed into another number that is ( Y). The data in your vault is transformed into a number, that number is ( X). several other password managers do not have this assurance. and if a problem is spotted it will be spotted and corrected quickly. That is the best assurance that nothing dodgy is going on. However, if used properly it is very very difficult for passwords stored in Bitwarden to be obtained by others.īitwarden's programming is available for experts to review. If she adds a new login, or changes an existing one, then that is scrambled up on her computer and added to the ones on the remote computer. She can then use them in websites/whatever. She puts in her own password to unscramble them on her computer. When she opens Bitwarden the store of scrambled passwords is copied to her computer/phone/whatever. ![]() Without this password it is very very difficult to unscramble them. Bitwarden cannot unscramble these passwords, as they don't know the password to unscramble them. Grandma's passwords are stored, scrambled up, on a remote computer. The sever only ever sees the encrypted version of the vault. This all also just happens on the client. This key is then used in combination with the AES-256 cipher to decrypt the data in your vault. Encryptionīitwarden uses a password based key derivation function, which takes the password, and turns it into a key. For most websites this happens on the sever, however as the server is not allowed to know the password, Bitwarden does this on the client. So your password+email combination would be hashed, and a different hash would get produced and saved. ![]() Thus a salt is added to the password, which is a public piece of information added to the password, to make these lookups harder. There are large tables of password/hash combinations, which means simply storing the hash isn't secure as someone can just compare the hash to the table, and recover the password (if it is in the table). (Example is done using the insecure MD5 hash). This way the server doesn't store the password, but the hash from which it can't recover the password. To authenticate you, the server can turn the password into the hash, and compare it to the stored hash. ![]() They take your password, hunter42, and turn it into a hash 503e26d65b9881ee40971b5eda7d1040. Hashes are not encryption but a cryptographic operation. ![]()
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